Number Bonds Worksheet

Fill in the missing numbers to complete each number bond. The two parts at the bottom add up to the whole number at the top.

___15
139___
21___
3___1
14___8
31___
3___1
___21
19___17
___214
128___
157___
19___17
___215
42___
15___2
8___5
81___
109___
___151
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